Amazon's Fire tablets are incredibly popular, mostly because they're incredibly cheap. However, none of them come with access to the Google Play Store, which is how most Android devices download and install applications.
https://www.androidpolice.com/2020/12/25/install-play-store-amazon-fire-tablet/
https://www.androidpolice.com/2020/12/25/install-play-store-amazon-fire-tablet/